Our jewelry cleaning effervescent tablets contain sodium bicarbonate and citric acid. It can remove dirt from all jewelry and accessories, including necklaces, earrings, bracelets, etc., and maintain the original luster of the jewelry. Its use is very simple: 1. Take a cleanser tablet and dissolve it in water. Dip the jewelry in water until the stain dissolves. 2. Finally, remove the jewelry and dry it. Helps to clean quickly and does not fade or discolor during cleaning.